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Oil Pan sludge
Posted by: redone76 ()
Date: November 13, 2017 08:33AM

On another note when I dropped the old oil pan there was a lot of sludge in the pan! Like 1/4-1/2 thick. No metal at all but just nasty thick stuff. Now I've been working on cars a long time and have seen some sludge build up and also what a paraffin wax based oil can do to an engine if not properly serviced. Is that what I'm seeing here or is this common to these engines?

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Re: Oil Pan sludge
Posted by: rowin4 ()
Date: November 13, 2017 08:52AM

I pulled a engine apart, not Corvair back in the 70's that used Quaker State oil that looked like that. I think they never changed the oil. Actually, I puller the drain plug and no oil came out . To my surprise when I unbolted the oil pan it was full of oil.



Edited 1 time(s). Last edit at 11/13/2017 08:54AM by rowin4.

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Re: Oil Pan sludge
Posted by: RobertC ()
Date: November 13, 2017 09:10AM

Depends on the "age" of the motor.

Corvair oil pans used get a buildup of lead / sludge from leaded gas.

Otherwise, dependent on oil used - and if it was changed.

Another thought - it could be residue from RTV if someone used that when fixing oil leaks / reassembling the engine.



Edited 2 time(s). Last edit at 11/13/2017 09:17AM by RobertC.

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Re: Oil Pan sludge
Posted by: redone76 ()
Date: November 13, 2017 09:30AM

RobertC Wrote:
-------------------------------------------------------
> Depends on the "age" of the motor.
>
> Corvair oil pans used get a buildup of lead /
> sludge from leaded gas.
>
> Otherwise, dependent on oil used - and if it was
> changed.
>
> Another thought - it could be residue from RTV if
> someone used that when fixing oil leaks /
> reassembling the engine.

You know it did feel like carbon build up. Kind of gritty at first but if rubbed between my fingers it got smooth. When I changed out the pushrod tubes they and the valve covers looked good.

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Re: Oil Pan sludge
Posted by: corventure Dave ()
Date: November 13, 2017 10:24AM

I have seen thick pasty sludge when STP was added. Also never changing the oil as mentioned. Short trips also add moisture to the crankcase. Air cooled engines can destroy oil due to the temperatures.
Boils down to changing the oil often is a must.

Here is the head of my Greenbrier. I change the dino or non-synthetic oil every 2500 miles. This is what my heads looked like after about 128,000 miles.
Yep... that's not a typo! Change that oil before it burns!

Corventure Dave

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Re: Oil Pan sludge
Posted by: redone76 ()
Date: November 13, 2017 10:44AM

corventure Dave Wrote:
-------------------------------------------------------
> I have seen thick pasty sludge when STP was added.
> Also never changing the oil as mentioned. Short
> trips also add moisture to the crankcase. Air
> cooled engines can destroy oil due to the
> temperatures.
> Boils down to changing the oil often is a must.
>
> Here is the head of my Greenbrier. I change the
> dino or non-synthetic oil every 2500 miles. This
> is what my heads looked like after about 128,000
> miles.
> Yep... that's not a typo! Change that oil before
> it burns!
>
> Corventure Dave


That's what I was thinking. Lack of oil change and oil burning leaving the heavy carbon deposits. Now I put in synthetic oil...will that be a problem? I did add zinc supplement also

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Re: Oil Pan sludge
Posted by: MattNall ()
Date: November 13, 2017 11:17AM

Shouldn't be!





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Re: Oil Pan sludge
Posted by: jjohnsonjo ()
Date: November 13, 2017 11:18AM

I bought a used 65 Chevy van a long time ago. The PO had installed a Frantz toilet paper oil filter. The claim was you just changed the toilet paper not the oil. It looked like that inside.

[www.frantzfilters.com]

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

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Re: Oil Pan sludge
Posted by: Spyderman64 ()
Date: November 13, 2017 11:23AM

I've had oil pans that had 3/8" of lead deposits in them. Hopefully that's what you have in yours.

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Re: Oil Pan sludge
Posted by: redone76 ()
Date: November 13, 2017 11:47AM

MattNall Wrote:
-------------------------------------------------------
> Shouldn't be!


Shouldn't be what bud....common?

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Re: Oil Pan sludge
Posted by: redone76 ()
Date: November 13, 2017 11:50AM

Spyderman64 Wrote:
-------------------------------------------------------
> I've had oil pans that had 3/8" of lead deposits
> in them. Hopefully that's what you have in yours.


That's what I'm hoping. I've only owned this van for about a year and as far as I can tell not much maintenance was kept up on. I've changed the oil twice and now it has a fresh pan on it. It's definitely been a labor of love!

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Re: Oil Pan sludge
Posted by: Brizo ()
Date: November 13, 2017 12:11PM

I saw pans full of sludge a lot by the late '70s, because instead of fixing the oil leaks, owners just kept pouring in the cheapest oil they could find. Several times I saw Corvairs like those lock up at high speed or in freezing weather because the sludge was so deep there was only room for about one quart of liquid oil in the area around the pick up screen. The owners were shocked because they had shown "full" on the dip stick!

Dan Brizendine,
'64 8door Greenbrier 140 PG. "In beautiful Wanamaker Indiana...with one stop light and 5 pizza shops"

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